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258 Uppsatser om Säsongsmässig reproduktion - Sida 18 av 18
Inverkan av utfodringsnivå och miljö på reproduktion och hållbarhet hos rekryteringskvigor :
This study is based on an earlier interdisciplinary study made by Redbo et al., (2000), Extensive cattle production systems ? out wintering, which lasted over two winters, 97/98 and 98/99, with two groups of heifers indoors and two groups of heifers outdoors raised in different environments, indoors or outdoors during their second winter. Both indoor and outdoor heifer groups were fed grass silage ad libitum throughout the experimental period that lasted from October until May. The objective of this study was to evaluate the long term effects of being raised in these two environments. This study includes data collected during the period lasting from the start of the experiment of Redbo et al., (2000) until the heifers had calved a second time and the results mainly deal with the performance of the animals after the experiment during their first two calvings and their first lactation.
Embryonal näringsförsörjning hos sandtigerhaj och kortfenad makohaj
In this report female farmers use of technical equipment is investigated. There is little research made on this subject in Sweden, therefore this report can be seen as an explorative study. Research makes it clear that machinery, throughout history and even today, has been seen as a male area. Heavy machines are often associated with the same attributes as masculinity. Force, power, efficiency and control are some examples.
Äggstocksaktivitet hos älgar (Alces alces)under älgjaktsperioderna i Jämtland
Älgstammen har stor betydelse för jägares rekreation, turism och som livsmedel. För att älgstammen ska vara en hållbar naturresurs i längden krävs en välfungerande reproduktion. Under hösten 2011 har reproduktionsorgan tillsammans med ytterligare material och data från 90 älghondjur samlats in från Fyringens älgtilldelningsområde i Jämtlands läns. Insamlingen gjordes under två perioder, tre veckor i september (5 - 24/9) samt från 10 oktober till början av november. Uppehållet gjordes under den 2-veckorsperiod, det så kallade ?brunstuppehållet?, (25/9 ? 10/10) då jakt ej är tillåtet.